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HCPL-7800 Datasheet

Part NameHCPL-7800 HP
HP => Agilent Technologies HP
DescriptionHigh CMR Isolation Amplifiers
HCPL-7800 image

The HCPL-7800 high CMR isolation amplifier provides a unique combination of features ideally suited for motor control circuit designers. The product provides the precision and stability needed to accurately monitor motor current in high noise motor control environments, providing for smoother control (less “torque ripple”) in various types of motor control applications.
This product paves the way for a smaller, lighter, easier to produce, high noise rejection, low cost solution to motor current sensing. The product can also be used for general analog signal isolation applications requiring high accuracy, stability and linearity under similarly severe noise conditions. For general applications, we recommend the HCPL-7800 which exhibits a part-to-part gain tolerance of ± 5%. For precision applications, HP offers the HCPL-7800A and HCPL-7800B, each with part-to-part gain tolerances of ± 1%.
The HCPL-7800 utilizes sigma-delta (Σ∆) analog-to-digital converter technology, chopper stabilized amplifiers, and a fully differential circuit topology fabricated using HP’s 1 µm CMOS IC process. The part also couples our high-efficiency, high speed AlGaAs LED to a high speed, noise-shielded detector

• 15 kV/µs Common-Mode Rejection at VCM = 1000 V*
• Compact, Auto-Insertable Standard 8-pin DIP Package
• 4.6 µV/°C Offset Drift vs. Temperature
• 0.9 mV Input Offset Voltage
• 85 kHz Bandwidth
• 0.1% Nonlinearity
• Worldwide Safety Approval:
   UL 1577 (3750 V rms/1 min), VDE 0884 and CSA
• Advanced Sigma-Delta (Σ∆) A/D Converter Technology
• Fully Differential Circuit Topology
• 1 µm CMOS IC Technology

• Motor Phase Current Sensing
• General Purpose Current Sensing
• High-Voltage Power Source Voltage Monitoring
• Switch-Mode Power Supply Signal Isolation
• General Purpose Analog Signal Isolation
• Transducer Isolation

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HCPL-7800 Isolation Amplifer

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HCPL-7800 Isolation Amplifer

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